Down Syndrome

 

John Langdon-Down (1828-96) was an English doctor who described and gave his name to Down's Syndrome, or mongolism.  This is a genetic defect of mental development, commonly identified with certain physical characteristics of the people of Magnolia, the Mongols (or Tungus), such as round, flattish face and half-hooded or seemingly slanted eyes.  

While mongolism is congenital, recent research has done much to establish its causes.